8 F45

AWF
 Applications and designations
CURRENT FUTURE
OTHER
YEAR RANGE APPLICATION YEAR RANGE
DESIGNATION
2014-2021 2019-2026
AWF8F45 TG-81LS VOLVO AWF8G28

AWF8F35 TG-80LS VOLVO AWF8G30

AWF8F45 AF50 GM AWF8G45

AWF8F35 U880E TOYOTA AWF8G55

AWF8F45 U881E TOYOTA

Make Model Make Model

AUDI Q3 TOYOTA HIGHLANDER

X1 TIGUAN
X2 VW CRAFTER
BMW ATLAS
1-SERIES
2-SERIES
V40
COMMODORE V60
LaCROSSE V70
GM CADILLAC S60
MALIBU VOLVO S80
INSIGNIA S90
XC40
RANGE ROVER EVOQUE XC60
XC90
LEXUS RX

COUNTRYMAN
MINI MINI
CLUBMAN

Introduction
The AWF8F35 is the world’s first front wheel drive 8-speed transverse mounted unit. Created by the Aisin
Group, it is currently being used by BMW, GM, and Volvo as well. The AWF8F45 is a similar unit with a
higher torque capacity. It has many different designations as well as vehicle applications.

It was first used in the Lexus RX350F Sport in MY 2013, then introduced to the Toyota, Sienna in MY 2016.

AWF8F35, TG80LX, U880E-F

2013-up Lexus RX350F Sport
2016-up Toyota Sienna
2017-up Toyota Camry
2019-up Toyota RAV4

2 AWF8F45
 Vehicle
Vehicle
Applications
Applications

General
General
Motors
Motors
usesuses
this unit
this unit
in vehicles
in vehicles
starting
starting
modelmodel
yearyear
2016.2016.
The The
RPORPO
codecode
identifying
identifying
this unit
this unit
is is
MRC.MRC.
The The
transmission
transmission
has ahas
fewa unique
few unique
characteristics
characteristics
that that
differ
differ
fromfrom
the Toyota
the Toyota
unit.unit.
TheseThese
itemsitems
will will
be discussed
be discussed
further
further
in the
inmaterial.
the material.

AWF8F45,
AWF8F45,
TG81LS,
TG81LS,
AF50-8
AF50-8

2018-up
2018-up
Holden
Holden
Colorado
Colorado
2016-up
2016-up
Buick
Buick
Cascada
Cascada
20172017
Buick
Buick
LaCrosse
LaCrosse
2018-up
2018-up
Buick
Buick
Regal
Regal
TourX
TourX
2016-up
2016-up
Chevrolet
Chevrolet
Malibu
Malibu
2016-up
2016-up
Chevrolet
Chevrolet
Cruze
Cruze
2016-up
2016-up
Cadillac
Cadillac
SRXSRX
2017-up
2017-up
Cadillac
Cadillac
XT5XT5
2017-up
2017-up
Vauxhall/Opel
Vauxhall/Opel
Insignia
Insignia

Vehicle Applications

Starting model year 2015, BMW and Mini use this unit behind small displacement motors. The OEM
designation for this unit is the GA8F22AW.

GA8F22AW, AW8F45, TG81LS

2015 BMW 2 Series Active Tourer

2015-up BMW Gran Tourer
2016-up BMW X1
2016-up Mini Cooper (1.5L)
2016-up Mini Clubman (2.0L)
2016-up Mini Countryman (2.0L)

AWF8F45 3
Vehicle Applications
Vehicle Applications

Volvo utilizes this transmission throughout the entire line of vehicles they produce. It was first introduced
General Motors uses this unit in vehicles starting model year 2016. The RPO code identifying this unit is
in S60, S80 and V70 models in model year 2014. Further use extends to the full sized SUV model, the
MRC. The transmission has a few unique characteristics that differ from the Toyota unit. These items will
XC90. It is coupled with the 2.0L motor.
be discussed further in the material.

AWF8F35, TG81SC
AWF8F45, TG81LS, AF50-8
2014-up Volvo S80
2018-up
2014-up Volvo Holden
V70 Colorado
2016-up
2014-up Buick Cascada
Volvo S60
2016-up2017
VolvoBuick
V60 LaCrosse
2018-up
2016-up VolvoBuick
S90 Regal TourX
2015-up Volvo Chevrolet
2016-up V40 Malibu
2016-up Volvo V90
2016-up Chevrolet Cruze
2015-up Volvo XC60
2016-up Cadillac SRX
2015-up Volvo XC70
2017-up Cadillac XT5
2015-up Volvo XC90
2017-up Vauxhall/Opel Insignia

Vehicle Applications

Other manufacturers use this transmission as well. Note, there may be other manufacturers and models
not listed here.

PEUGEOT:
AWF8F35, TF81SC
2017-up Peugeot 5008
2017-up Peugeot 308

CITROEN:
AWF8F35,45
2018-up Citroen DS7

VOLKSWAGEN:
AWF8F35,45
2017 VW Crafter
2018-up VW Tiguan
2018-up VW Atlas
2019-up VW Jetta

4 AWF8F45
Introduction (Toyota, Lexus)
Transaxle compensation codes are unique, 60-digit alphanumeric values printed on the QR label. When the
automatic transaxle is replaced, the transaxle's compensation code must be input into the TCM. When the
TCM is replaced, the existing transaxle compensation codes must be input into the new TCM. This must be
done with a factory scan tool/laptop software or compatible tool. If an incorrect transaxle compensation code
is input into the TCM, harsh shifts may occur.

Introduction (GM, Opel, Vauxhall, Holden)

The AF50-8 has adaptive value learning capabilities and special operating modes.

AF50, AWF8F45 Features:

• Shift and Garage shift control

learning
• Manual shift mode
• Reverse lock out
• Failsafe 3rd, 7th or Reverse
• Neutral Control
• Hill Hold mode (brake assisted)

AWF8F45 5
Gear Ratios

Note: Lubegard Complete

Full Synthetic may be used
Gear Final Drive Final Drive Final Drive for this application
4.498 3.075 or 3.200 2.561
1st 5.200 5.250 5.519 PART # 49991-01

2nd 2.971 3.029 3.184

3rd 1.950 1.950 2.050

4th 1.469 1.457 1.491

5th 1.223 1.221 1.234

6th 1.000 1.000 1.000

7th 0.817 0.809 0.800

8th 0.685 0.673 0.673

6 AWF8F45
 Line Pressure Test (Toyota, Lexus)

Perform this test with the ATF (Automatic Transaxle Fluid) at the normal operating temperature 50° to 80°C,
(122° to 176°F). Be careful to prevent the pressure gauge hose from contacting the exhaust. Perform this test
with the air conditioning off. Do not perform the stall test for longer than 5 seconds.

When performing the stall speed test

repeatedly, wait for 15 seconds or more
between tests. The installation position
of the pressure gauge is different for the
D position and R position for line
(C1) Line Pressure
pressure tests.

Perform this test with the AUTO

function (shift-linked function) of the Cooler Send
electronic parking brake system off.

Also, note the cooler line designations. Cooler Return

Line Pressure Test (Toyota, Lexus),(continued)

Once you’ve performed your pressure tests, you’re ready to evaluate your results. If pressure is high in all
ranges and tests, look for a problem in the SLT solenoid (line pressure solenoid), or the regulator valve is worn
or stuck in the high position.

If the pressure is only low when you have the shift lever Reverse
in drive, look for a leak in the drive range circuit, which Pressure
feeds the #1 clutch (C1). If the pressure is only low when
you have the shift lever in reverse, look for a leak in the
reverse circuit, which includes the #3 clutch (C3) and the
#2 brake (B2).

Line Pressure Tests

Drive Reverse
Idle 60-75 psi (4.1-5.2 Bar) 80-100 psi (5.5-6.9 Bar)
Stall 225-255 psi (15.5-17.6 Bar) 255-300 psi (17.6-20.7 Bar)

8 AWF8F45
Line Pressure Test (GM, Opel, Vauxhall, Holden)

For the GM applications, testing procedures and specification are slightly different from Toyota applications:

1. Apply the parking brake and chock the wheels.

2. Remove the C-1 test plug and install line pressure adapter and gauge.
3. Start engine and shift to the “D” position then check oil pressure at idling engine.
Do not depress the brake pedal. (Oil pressure is detected low if depress brake pedal).
Component Names

(C1) C1 Forward Clutch

Line
Line Pressure Tests C1 Direct Clutch
Pressure
Units Drive (idle) C1 3-7-R Clutch
Psi 50-75 C1 4-6 Clutch
kPa 350-520 C1 Forward Band
C1 1st-Rev Clutch
C1 One Way Clutch

Line Pressure Test (GM, Opel, Vauxhall, Holden), (continued)

For the GM applications, they offer more test ports for clutch and band hydraulic circuits. This is very useful
when diagnosing shift quality issues and gear ratio concerns.

(C1) Operating Components

Line
Pressure Drive (idle) Operation
C1 C1 Connects front planetary ring gear to
Clutch rear planetary rear sun gear
C3 C3 Connects front planetary ring gear to
(C3) Clutch rear planetary sun gear
C4 C4 Connects front planetary carrier to
(C4) Clutch rear planetary middle sun gear

AWF8F45 9
Line Pressure Test (GM, Opel, Vauxhall, Holden)
Line Pressure Test (GM, Opel, Vauxhall, Holden), (continued)
For the GM applications, testing procedures and specification are slightly different from Toyota applications:
For the GM applications, they offer more test ports for clutch and band hydraulic circuits. Testing procedures
1. Apply
and the parking
specification arebrake and
slightly chock the
different wheels.
from Toyota applications:
2. Remove the C-1 test plug and install line pressure adapter and gauge.
3. Start engine and shift to the “D” position then check oil pressure at idling engine.
Operating
Do not depress the brake pedal. (Oil pressure is detected lowComponents
if depress brake pedal).
Clutch/Brake Operation Component Names
C2 Connects intermediate shaft to rear
(C1) C2 C1 Forward Clutch
C2 Clutch planetary carrier
Line
B2 Line
Locks Pressure Tests
rear planetary carrier to the C1 Direct Clutch
Pressure B2
Clutch case
Units Drive (idle) C1 3-7-R Clutch
B2 B1
B1 Locks
Psi rear planetary
50-75middle sun gear C1 4-6 Clutch
Brake
B1
One kPa counterclockwise
350-520 rotation of C1 Forward Band
Locks
F1 way
the rear planetary carrier C1 1st-Rev Clutch
Lube Clutch
C1 One Way Clutch

Clutch and Band Application Chart

One Way
Range C1 Clutch C2 Clutch C3 Clutch C4 Clutch B1 Brake B2 Brake
Clutch
P O
R Reverse X X
N O
N Control O O O X
1st X X
2nd X X
3rd X X
D 4th X X
5th X X
6th X X
7th X X
8th X X
1st Engine
M X X
Braking

X = Applied Note: N Control is neutral control. Once the vehicle reaches operating temperature and other vehicle operating
O =Applied, but not active. parameters are met, the PCM will turn the engine off and manage pressure to the C1 clutch (on select
applications).

10 AWF8F45
 Shift Solenoid Operation

Gear 1st 2ND 3RD 4TH 5TH 6TH 7TH 8TH Shift Solenoid Valve Function

Shift Solenoid Valve SL1 ON ON ON ON ON OFF OFF OFF Shift Solenoid Valve SL1 #1 Clutch (C1) Pressure Control

Shift Solenoid Valve SL2 OFF OFF OFF OFF ON ON ON ON Shift Solenoid Valve SL2 #2 Clutch (C2) Pressure Control

Shift Solenoid Valve SL3 OFF OFF ON OFF OFF OFF ON OFF #3 Clutch (C3) Pressure Control
Shift Solenoid Valve SL3
#2 Brake (B2) Pressure Control
Shift Solenoid Valve SL4 OFF OFF OFF ON OFF ON OFF OFF Shift Solenoid Valve SL4 #4 Clutch (C4) Pressure Control
Shift Solenoid Valve SL5 OFF ON OFF OFF ON ON ON ON Shift Solenoid Valve SL5 #1 Brake (B1) Pressure Control

Line Pressure Control

Shift Solenoid Valve SLT
Note: These are Toyota solenoid designations. Most OEM (Switches the #1 Clutch Apply Relay Valve)
manufacturers that use this unit use these designations as Shift Solenoid Valve SLU
Lock-up Clutch Pressure Control
(Switches the Lock-up Relay Valve)
well.
Shift Solenoid Valve S1 Switches the C3-B2 Clutch Apply Control Valve
“L” in the solenoid descriptor designates a linear type
Shift ASolenoid
solenoid. Operation
Pulse Width Modulated signal is(continued)
used to actuate
Shift Solenoid Valve S2 Switches the B2 Apply Control Valve

them.

Shift Solenoid Valve S1 and S2 are fast-acting switch

valves. The control clutch apply oil routing for the C3 and Shift Solenoid Valve Type Function
B2 oil circuits.
Shift Solenoid Valve S1 3-way Switches the C3-B2 Apply Control Valve

These circuits are control by the same Apply Control Shift Solenoid Valve S2 3-way Switches the B2 Control Valve
Valve.

AWF8F45 11
 Park Neutral Switch Location & Function

Between
Resistance
Pins:
1-3 and 4-9 Less than 1 ohm (park) 10 Kohms or higher (out of park)
1-2 Less than 1ohm (reverse) 10 Kohms or higher (out of reverse)
1-8 and 4-9 Less than 1ohm (neutral) 10 Kohms or higher (out of neutral)
1-7 Less than 1ohm (Drive, Sport, + and -) 10 Kohms or higher (out of Drive, Sport, + and -)

# Pin ID
1 Ignition voltage B+
2 Reverse signal
3 Park signal
4 From Main Body
Control Module
5 N/A
6 N/A
7 Drive signal
8 Neutral signal
9 Park/Neutral Switch
signal

Park
ParkNeutral
NeutralSwitch
SwitchLocation & Function
Location (GM,
& Function Opel,
(GM, Vauxhall,
Opel, Holden)
Vauxhall, Holden)

TheThe
TCM is mounted
TCM directly
is mounted on top
directly of the
on top transmission.
of the The The
transmission. geargear
selector shaftshaft
selector goesgoes
through the the
through
TCM.
TCM.

There is no
There mechanical
is no adjustment.
mechanical TheThe
adjustment. selector lever
selector position
lever is calibrated
position withwith
is calibrated a scan tool.tool.
a scan The The
Selector Lever
Selector Position
Lever sensor
Position consists
sensor of 2of
consists hall effect
2 hall sensors
effect imbedded
sensors imbeddedin the
inTCM module.
the TCM module.

NOTE: Remove
NOTE: andand
Remove install thisthis
install sensor withwith
sensor the the
manual lever
manual in NEUTRAL
lever ONLY!
in NEUTRAL ONLY!

12 AWF8F45
 Solenoid Connector
Pin # Circuit Pin # Circuit
1 NTB Speed Sensor 14 SLU Solenoid (-)
2 NTO Speed Sensor 15 SL4 Solenoid (+)
3 SLT Solenoid (+) 16 SL4 Solenoid (-)
30-pin 4 SLT Solenoid (-) 18 S1 Solenoid
connector 5 SL5 Solenoid (+) 21 NCB Speed Sensor
6 SL5 Solenoid (-) 22 NCO Speed Sensor
7 S2 Solenoid 23 SL1 Solenoid (+)
8 ATF Fluid Temp Signal 24 SL1 Solenoid (-)
9 ATF Fluid Temp Ground 25 SL3 Solenoid (+)
10
1 11 NC3B Speed Sensor 26 SL3 Solenoid (-)
12 NC3O Speed Sensor 28 SL2 Solenoid (+)
11 20 13 SLU Solenoid (+) 29 SL2 Solenoid (-)

21 30

Speed Sensor Identification

Input/Turbine Speed Sensor A (NT)

Reads the C3 and C4 clutch drum
(Note: GM applications do not have this
sensor).

Input/Turbine Speed Sensor B (NC3)

Reads the C2 drum.

Vehicle
Speed/Output
Sensor (NC)
Reads the speed of
the counter gear

AWF8F45 13
Transmission Fluid Temperature Sensor

The transmission fluid temperature is a

part of the internal wiring harness. The
sensor is a typical NTC type:

8-5K ohms @ 50°F (10°C)

.29-.21K ohms @ 230°F (110°C)

14 AWF8F45
 Shift Solenoid Location and Specifications

Resistance
# Solenoid
(Ohms)
1 SL1 (PCSA) 5.5-5.6
5
2 S1 (SSA) 11-15
3 SL4 (PCSG) 5.5-5.6
1 6
4 SL5 (PCSH) 5.5-5.6
7 5 SLU (TCC) 5.5-5.6

2 8
6 S2 (SSB) 11-15
7 SL2 (PCSB) 5.5-5.6
8 SL3 (PCSC) 5.0-5.6
9 SLT (PCSD) 5.0-5.6
3 9
Remove these bolts and retainer
4 plate to access the solenoid
retainer pins.

Shift Solenoid Location and Specifications

Electromagnetic Oil Pump

The AF50-8 GM variant of this unit is equipped with and
additional solenoid called the Electromagnetic Oil Pump
(EMOP). Other OEM manufacturers may also be equipped
with this additional solenoid. The solenoid name may differ.

The Electromagnetic Oil Pump is mounted on the upper valve

body, as indicated.

Electromagnetic
Oil Pump

AWF8F45 15
EMOP (Electronic
EMOP Magnetic
(Electronic Oil Pump)
Magnetic Identification
Oil Pump) and Operation
Identification and Operation

The structure of the electro-magnetic element is the same as that of a linear solenoid. The piston in the EMOP operates in
The structure of the electro-magnetic element is the same as that of a linear solenoid. The piston in the EMOP opera
response to ON/OFF signals from the TCM, creating pressure.
response to ON/OFF signals from the TCM, creating pressure.

The solenoid is designed to maintain ‘adequate’ clutch pressure. When performing a line pressure test, C1 clutch pressure
The solenoid is designed to maintain ‘adequate’ clutch pressure. When performing a line pressure test, C1 clutch pre
will be lower when the EMOP is functioning (engine off) versus when the EMOP is off (engine on).
will be lower when the EMOP is functioning (engine off) versus when the EMOP is off (engine on).

EMOP (Electronic Magnetic Oil Pump) Identification and Operation (continued)

Hydraulic pressure generated by the EMOP is solely used to engage the C1 clutch during an
idling stop state, creating a smooth transition from a stopped engine to a driving state.

Engine EMOP SL1 Engine

OFF Running

IN

IN

16 AWF8F45
 Valve Body Identification

Units that have the

EMOP solenoids use
two plastic green
check valves

Relief Springs Cooler Bypass Spring

.600" x .246" x .022" .622" x .248" x .035"
Valve Body Identification (continued)
Cooler Bypass
Relief Valve .438" x .369" x .050"
.600" x .246" x .022"

AWF8F45 17
 Valve Body Identification (continued)
# Component Spring Dimensions
1 B2 Apply Control (1.435”x .325”x .025”)
2 C-3/B-2 Apply Control (1.134”x .236”x .021”)
3 Primary Regulator (1.192”x .559”x .050”)
1 4 Secondary Regulator (1.493”x .391”x .046”)
5 No.1 Clutch Apply Relay (.718”x .210”x .020”)
2
6 No. 2 Clutch Apply Relay (.992”x .308”x .023”)
3 7 Lock-Up Relay (1.420”x .385”x .023”)
8 Lock Up Control (.822”x .215”x .026”)
4 C-2 Clutch Accumulator
9 Outer (1.107”x .438”x .068”)
5 Inner (1.370”x .308”x .045”)

6
9
7

Valve Body Identification (continued)

5
1

# Component Spring Dimensions

2
1 N-D Accumulator (2.212”x .618”x .062”)
6
2 Solenoid Modulator (.982”x .337”x .045”)
C4 Clutch Accumulator 7
3 Outer (1.107”x .438”x .068”)
Inner (1.137”x .308”x .045”)
B1 Brake Accumulator
4 Outer (1.107”x .438”x .068”) 8
Inner (1.137”x .308”x .045”)
3
C2 Clutch Accumulator
5 Outer (1.107”x .438”x .068”) 9
Inner (1.137”x .308”x .045”)
4
6 No. 1 Solenoid Relay (1.403”x .324”x .025”)
7 No. 2 Solenoid Relay (1.142”x .234”x .021”)
C3 Clutch Accumulator
8 Outer (1.107”x .438”x .068”)
Inner (1.370”x .308”x .045”)
9 SLT Damper (.862”x .350”x .045”)

18 AWF8F45
Air Check Locations 2 3
4

# Clutch/Brake
1 B1 Brake
1
2 C4 Clutch
3 C3 Clutch
4 C1 Clutch
5 C2 Clutch
6 B2 Brake

NOTE: Use 35 psi air

pressure to test this unit.

6 5
Servo Travel
If servo travel is not as specified, select a servo pin from the chart.

Servo travel: 5.5 to 6.0 mm (0.217"- 0.236")

Servo Return Spring

2.930" X 1.041" X .110"

AWF8F45 19
C3 and C4 Clutch Drum Identification

The C-3 piston can not be removed at this time, it is held with 32 rivets. The assembly must be
purchased in order to service the seals. Several aftermarket companies are working on
solutions for servicing this component.

C3 and C4 Clutch Drum Identification (continued)

C4 Small Clutch C3 Large Clutch

C4 Clutch Clearance C3 Clutch Clearance

0.4-0.6 mm / .0157" - .0266" 0.3-0.5 mm / .0118" - .0197"

20 AWF8F45
C1 Clutch Drum Identification

B2 Brake Identification

If the clearance is not as specified, select an appropriate clutch flange so that the clearance will be
within the specified range.

Clutch Clearance
0.5 to 0.7 mm
.0197" - .0276"

AWF8F45 21
Sprag Rotation

ROTATES
CLOCKWISE
The sprag is held in place when HOLD
it is in the case.
Planetary should rotate freely
clockwise and lock counter-
clockwise.

C2 Clutch Drum Identification

If the clearance is not as specified,
select an appropriate clutch flange so
that the clearance will be within the
specified range.

Clutch Clearance
0.6 to 0.8 mm
.0236" - .0315"

22 AWF8F45
B2 Brake Snap Ring

The B-2 Brake clutch return springs and piston is held in place by the snap ring. The snap ring must
be installed with the opening of the snap ring facing the case walls and NOT in the tooth gaps. This
will ensure the snap ring to hold its place in the case.
Snap ring opening needs to
be placed here

NOTE: The location of the snap

ring opening is incorrect in this
picture. Opening goes as noted by
the arrow.

Toyota Special service tool

(SST) #09950-70010

Service Information
This transaxle uses Genuine ATF WS transmission fluid. Lubegard Complete Full Synthetic fluid is compatible.
Incorrect fluid usage results in shift quality issues, lock up apply complaints and/or possible premature
transmission failure.

Fill transaxle after pan service:

Overflow
Plug
• Remove the fill plug
and overflow plug.
• Fill the transaxle Fill Plug
through the refill hole
until fluid begins to
Stand
trickle out of the pipe
overflow tube.
• Temporarily install the
overflow plug.

AWF8F45 23
 Service Information (Toyota, Lexus)
Allow the engine to idle with the air conditioning OFF. Move the shift lever through entire gear range to
circulate the fluid.
With Techstream:
• Connect Techstream to the DLC3
• Turn the tester on.
• Enter the following menus: "Powertrain / ECT / Data List". Check A/T Oil Temperature 1.
• Allow the engine to idle until the fluid temperature reaches 39°C (102°F).

Service Information (continued)

Without the Techstream (Using D shift indicator):

• Connect terminals CG (4) and TC (13) of the DLC3 using SST. SST 0984318040 (or equivalent)
• Move the shift lever back and forth between N and D at 1.5 seconds interval for 6 seconds.
• The D shift indicator on the combination meter comes on for 2 seconds when the fluid temperature is
within the appropriate temperature range.
• Add fluid until it comes out the overflow plug, wait until the overflow slows to a trickle.
• Install the overflow plug and refill plug with a new gasket.

DLC 3

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

24 AWF8F45
ECM Reset (Toyota, Lexus)

The ECM must be reset before driving the vehicle after installation. You must use an OE or
approved scan tool You need to reset the adapts (reset ECM/PCM).

Failure to do so can result in slipping and or binding shifts and failure of the transmission after
only a short road test.

Some remanufacturers will require that you follow these steps or your warranty will be
voided:

• Verify that computer has latest software calibrations.

• Clear codes
• Reset Adaptive Learn
• Rescan after Road test and make sure no codes have come back.

Adaptive Learn Reset:

You’ll need the proper equipment to perform this resetting procedure, If not the vehicle must
be towed to a Toyota/Lexus dealership or other facility with OEM type equipment.

Check Mode (Toyota, Lexus)

Check Mode is an OEM diagnostic feature that allows the TCM or PCM to have a higher sensitivity level to
malfunctions. This helps to detect codes that may not meet the normal code setting criteria during a normal
test drive. The Check Mode codes are set in a single trip logic. Using an OEM or compatible scan tool,
Check Mode must be manually enabled as follows:
Check Mode procedure:
1. Ensure of the follow conditions;
• Battery voltage is 11 volts or greater.
• Throttle valve is fully closed.
• The shift lever is in Park or Neutral.
• The air conditioning system is turned OFF.
2. Make certain the ignition is OFF.
3. Connect the scan tool.
4. Turn the ignition ON.
5. Find “Check Mode” on the scan tool menu (PCM or TCM).
6. Change the TCM/PCM to “Check Mode”, make sure the MIL flashes rapidly (at around 1/10 sec
on-off cycling).
7. Start the engine, the MIL lamp should turn OFF after the engine starts.
8. Perform a drive cycle allowing “Check Mode” to store any codes it detects and retrieve those
codes.
NOTE: When the TCM/PCM is switched to “Check Mode”, all previous DTC’s and Freeze Frame data
will be erased. Be sure to record this data before enabling “Check Mode” or switching back to
“Normal Mode”. Ensure that the TCM/PCM is returned to “Normal Mode” once the “Check Mode”
procedure is completed.

AWF8F45 25
Service Information (GM, Opel, Vauxhall, Holden)

The AF50-8 has several, scanner driven relearn functions that must be performed for proper operation of
this unit. Using the Global Diagnostic System (GDS) scanner or equivalent, navigate to the transmission
data to find the following functions:

• Initial Adaptive learn

• Garage shift control learn*
• Shift control learn*
• Neutral position learn

*-- Note, depending on the scan tool being used, the

Garage shift and Shift control learn functions may not be
available separately, but will be performed under the
Initial Adaptive learn.

Failure to clear adaptive values and perform Learn

functions could cause poor transmission performance,
diagnostic trouble codes and/or transmission failure.

26 AWF8F45
ransmission Adaptive
Transmission Functions
Adaptive and Relearn
Functions Procedure
and Relearn Procedure
(GM, Opel, Vauxhall,
(GM, Opel, Holden)
Vauxhall, Holden)
RelearnRelearn
Procedure:
Procedure:

The ECM Themust

ECMbe must
resetbe
before
resetdriving
beforethe vehicle
driving theafter installation.
vehicle You must
after installation. usemust
You an OE
useoran
approved
OE or approved
scan tool. Youtool.
scan needYou
to reset thereset
need to adapts
the(reset
adaptsECM/PCM).
(reset ECM/PCM).

Failure to do so to
Failure can
doresult
so caninresult
slipping and or binding
in slipping and or shifts and
binding failure
shifts andoffailure
the transmission after only
of the transmission a only a
after
short road test.
short road test.
Some remanufacturers will require
Some remanufacturers will that youthat
require follow
youthese steps
follow or steps
these your warranty will be voided!
or your warranty will be voided!

1. Verify
1. that computer
Verify has latest
that computer hassoftware calibrations.
latest software calibrations.
2. Clear
2. codes
Clear codes
3. Reset
3. Adaptive Learn Learn
Reset Adaptive
4. Rescan
4. after Road
Rescan test
after andtest
Road make sure
and no codes
make have
sure no come
codes back.
have come back.

Adaptive Learn Reset:

Adaptive Learn Reset:

You’ll need theneed

You’ll proper
theequipment to perform
proper equipment this resetting
to perform procedure,
this resetting if not, the
procedure, vehicle
if not, themust be must be
vehicle
towed totowed
a dealership or otheror
to a dealership facility
otherwith OEM
facility type
with equipment.
OEM type equipment.

ransmission Adaptive Functions and Relearn Procedure

(GM, Opel, Vauxhall, Holden)

Initial Learning

1. Engine Running
2. Move the selector lever from N to D and wait 5 s in each range. Then move the selector lever back to N.
3. Move the selector lever from N to R and wait 5 s in each range. Then move the selector lever back to N.

NOTE: Step 5, 6, 7 requires the vehicle to be driven on the road. Do NOT use manual mode function to
perform the following steps:

Transmission in Drive

4. From a stop, accelerate to 72 km/h (45 MPH) with the throttle position between 15 and 25%. More than
5 times.
5. From a stop, accelerate to 72 km/h (45 MPH) with the throttle position between 45 and 55%. More than
5 times.
6. From a stop, accelerate to 72 km/h (45 MPH) with the throttle position greater than 70%. More than 5
times.
7. Ignition=Off. For greater than 2 min
8. From a stop, accelerate until the transmission reaches gear 8 and then coast down to a stop. More than
10 times.

AWF8F45 27